3964651 has 2 divisors, whose sum is σ = 3964652. Its totient is φ = 3964650.

The previous prime is 3964633. The next prime is 3964663. The reversal of 3964651 is 1564693.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3964651 - 2⁷ = 3964523 is a prime.

It is not a weakly prime, because it can be changed into another prime (3964951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1982325 + 1982326.

It is an arithmetic number, because the mean of its divisors is an integer number (1982326).

Almost surely, 2^3964651 is an apocalyptic number.

3964651 is a deficient number, since it is larger than the sum of its proper divisors (1).

3964651 is an equidigital number, since it uses as much as digits as its factorization.

3964651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19440, while the sum is 34.

The square root of 3964651 is about 1991.1431390033. The cubic root of 3964651 is about 158.2711122709.

The spelling of 3964651 in words is "three million, nine hundred sixty-four thousand, six hundred fifty-one".